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                    5、go语法--数据类型
            
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                    8、go的字符类型
            
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                    9、go的bool类型
            
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                    10、go的string类型
            
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                    11、基本数据类型相互转换
            
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                    12、基本数据类型和string的转换
            
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                    13、go的指针
            
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                    14、go的标识符
            
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                    15、go的关键字
            
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                    16、go的运算符-算术运算
            
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                    17、比较、赋值、逻辑运算符
            
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                    18、运算符的优先级
            
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                    19、其他运算符
            
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                    20、go获取键盘输入
            
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                    21、进制、位运算
            
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        <li class="chapter " data-level="1.4.33" data-path="22、if和switch语句.html">
            
                <a href="22、if和switch语句.html">
            
                    
                    22、if和switch语句
            
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        <li class="chapter " data-level="1.4.34" data-path="23、for循环.html">
            
                <a href="23、for循环.html">
            
                    
                    23、for循环
            
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        <li class="chapter " data-level="1.4.35" data-path="24、goto语句.html">
            
                <a href="24、goto语句.html">
            
                    
                    24、goto语句
            
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        <li class="chapter " data-level="1.4.36" data-path="25、函数1.html">
            
                <a href="25、函数1.html">
            
                    
                    25、函数1
            
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        <li class="chapter " data-level="1.4.37" data-path="26、包-package.html">
            
                <a href="26、包-package.html">
            
                    
                    26、包-package
            
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        <li class="chapter " data-level="1.4.38" data-path="27、init函数.html">
            
                <a href="27、init函数.html">
            
                    
                    27、init函数
            
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        <li class="chapter " data-level="1.4.39" data-path="28、匿名函数.html">
            
                <a href="28、匿名函数.html">
            
                    
                    28、匿名函数
            
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        <li class="chapter " data-level="1.4.40" data-path="29、闭包.html">
            
                <a href="29、闭包.html">
            
                    
                    29、闭包
            
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        <li class="chapter " data-level="1.4.41" data-path="30、defer.html">
            
                <a href="30、defer.html">
            
                    
                    30、defer
            
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        <li class="chapter " data-level="1.4.42" data-path="31、值传递和引用传递.html">
            
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                    31、值传递和引用传递
            
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        <li class="chapter " data-level="1.4.43" data-path="32、常用字符串函数.html">
            
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                    32、常用字符串函数
            
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        <li class="chapter " data-level="1.4.44" data-path="33、时间和日期函数.html">
            
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                    33、时间和日期函数
            
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        <li class="chapter " data-level="1.4.45" data-path="34、go语言的内置函数.html">
            
                <a href="34、go语言的内置函数.html">
            
                    
                    34、go语言的内置函数
            
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        <li class="chapter " data-level="1.4.46" data-path="35、go语言的错误处理.html">
            
                <a href="35、go语言的错误处理.html">
            
                    
                    35、go语言的错误处理
            
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        <li class="chapter " data-level="1.4.47" data-path="36、数组.html">
            
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                    36、数组
            
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        <li class="chapter " data-level="1.4.48" data-path="37、切片slice.html">
            
                <a href="37、切片slice.html">
            
                    
                    37、切片slice
            
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        <li class="chapter " data-level="1.4.49" data-path="38、string和slice.html">
            
                <a href="38、string和slice.html">
            
                    
                    38、string 和 slice
            
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        <li class="chapter " data-level="1.4.50" data-path="39、二维数组.html">
            
                <a href="39、二维数组.html">
            
                    
                    39、二维数组
            
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        <li class="chapter " data-level="1.4.51" data-path="40、map的用法.html">
            
                <a href="40、map的用法.html">
            
                    
                    40、map的用法
            
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        <li class="chapter " data-level="1.4.52" data-path="41、获取命令行参数.html">
            
                <a href="41、获取命令行参数.html">
            
                    
                    41、获取命令行参数
            
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            </ul>
            
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        <li class="chapter " data-level="1.5" data-path="../Istio/">
            
                <a href="../Istio/">
            
                    
                    Istio
            
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        <li class="chapter " data-level="1.6" data-path="../redis/">
            
                <a href="../redis/">
            
                    
                    Redis
            
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        <li class="chapter " data-level="1.6.1" >
            
                <span>
            
                    
                    golang连接redis
            
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        <li class="chapter " data-level="1.6.1.1" data-path="../redis/golang连接redis/1、go语言连接使用redis.html">
            
                <a href="../redis/golang连接redis/1、go语言连接使用redis.html">
            
                    
                    1、go语言连接使用redis
            
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        <li class="chapter " data-level="1.6.1.2" data-path="../redis/golang连接redis/2、redis连接池.html">
            
                <a href="../redis/golang连接redis/2、redis连接池.html">
            
                    
                    2、redis连接池
            
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            </ul>
            
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        <li class="chapter " data-level="1.6.2" >
            
                <span>
            
                    
                    protected-mode设置
            
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        <li class="chapter " data-level="1.6.2.1" data-path="../redis/protected-mode设置/1、设置保护模式.html">
            
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                    1、设置保护模式
            
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            </ul>
            
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        <li class="chapter " data-level="1.6.3" data-path="../redis/1、redis的安装.html">
            
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                    1、redis的安装
            
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        <li class="chapter " data-level="1.6.4" data-path="../redis/2、redis数据库的命令操作.html">
            
                <a href="../redis/2、redis数据库的命令操作.html">
            
                    
                    2、redis数据库的命令操作
            
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        <li class="chapter " data-level="1.6.5" data-path="../redis/3、string类型的操作.html">
            
                <a href="../redis/3、string类型的操作.html">
            
                    
                    3、string类型的操作
            
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        <li class="chapter " data-level="1.6.6" data-path="../redis/4、hash类型的操作.html">
            
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                    4、hash类型的操作
            
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        <li class="chapter " data-level="1.6.7" data-path="../redis/5、list类型的操作.html">
            
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                    5、list类型的操作
            
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                    6、Set类型的操作
            
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        <li class="chapter " data-level="1.6.9" data-path="../redis/7、docker安装redis.html">
            
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                    7、docker安装redis
            
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                    8、redis集群搭建
            
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                    9、zset类型的操作
            
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                    数据结构和算法
            
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                    1、稀疏数组
            
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                    2、队列
            
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                    3、单向链表
            
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                    4、双向链表
            
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                    5、单向环形链表
            
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                    6、约瑟夫问题
            
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                    7、选择排序
            
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                    8、插入排序
            
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        <li class="chapter " data-level="1.7.9" data-path="../数据结构和算法/9、快速排序法.html">
            
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                    9、快速排序法
            
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            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.8" data-path="../springCloud/">
            
                <a href="../springCloud/">
            
                    
                    springCloud
            
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        <li class="chapter " data-level="1.8.1" data-path="../springCloud/consul/">
            
                <a href="../springCloud/consul/">
            
                    
                    consul
            
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        <li class="chapter " data-level="1.8.1.1" data-path="../springCloud/consul/1、springcloud服务注册到consul.html">
            
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                    1、springcloud服务注册到consul
            
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                    2、springcloud消费consul中注册的服务
            
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                    3、springcloud使用consul做配置中心
            
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                    springBoot
            
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                    一些问题解决方式
            
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                    1、StreamingResponseBody问题
            
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                    1、新建springboot工程
            
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                    1、Eureka服务注册中心
            
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                    2、服务调用
            
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                    3、断路器hystrix的使用
            
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                    4、断路器hystrix的隔离策略
            
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                    5、hystrix的Dashboard和Turbine
            
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                    Vpn
            
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                    1、ss服务器的安装
            
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                    2、SS客户端
            
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                    gitbook的使用
            
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                    1、gitbook 的使用
            
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                    2、gitbook命令
            
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                    4、gitbook插件
            
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                    5、去掉-本书由gitbook发布
            
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                    1、markdown的学习
            
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                    2、分布式事务的理论
            
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                                <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;-string-&#x7C7B;&#x578B;"><b>1. </b>&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C; string &#x7C7B;&#x578B;</a></li><ul><li><span class="title-icon "></span><a href="#sprintf-&#x65B9;&#x5F0F;&#x3002;"><b>1.1. </b>Sprintf &#x65B9;&#x5F0F;&#x3002;</a></li><li><span class="title-icon "></span><a href="#strconv&#x65B9;&#x5F0F;&#x3002;"><b>1.2. </b>strconv&#x65B9;&#x5F0F;&#x3002;</a></li></ul><li><span class="title-icon "></span><a href="#string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;"><b>2. </b>string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;</a></li><ul><li><span class="title-icon "></span><a href="#&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;"><b>2.1. </b>&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;</a></li><li><span class="title-icon "></span><a href="#string-&#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;"><b>2.2. </b>string &#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;</a></li></ul></ul></div><a href="#&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;-string-&#x7C7B;&#x578B;" id="anchorNavigationExGoTop"><i class="fa fa-arrow-up"></i></a><h1 id="&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;-string-&#x7C7B;&#x578B;"><a name="&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;-string-&#x7C7B;&#x578B;" class="anchor-navigation-ex-anchor" href="#&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;-string-&#x7C7B;&#x578B;"><i class="fa fa-link" aria-hidden="true"></i></a>1. &#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C; string &#x7C7B;&#x578B;</h1>
<p><strong>&#x628A;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x8F6C;&#x6362;&#x4E3A;string&#x6709;2&#x79CD;&#x65B9;&#x5F0F;&#x3002;</strong></p>
<ol>
<li><p>&#x4F7F;&#x7528;fmt&#x5305;&#x7684;<strong>Sprintf</strong> &#x51FD;&#x6570;&#x3002;&#x51FD;&#x6570;&#x7B7E;&#x540D;&#xFF1A;<strong>func Sprintf(format string, a ...interface{}) string &#x3002;</strong>&#x6587;&#x6863;&#xFF1A;<a href="http://docscn.studygolang.com/pkg/fmt/#Sprint" target="_blank">http://docscn.studygolang.com/pkg/fmt/#Sprint</a></p>
</li>
<li><p>&#x4F7F;&#x7528; strconv  &#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;&#x6587;&#x6863;&#xFF1A;<a href="http://docscn.studygolang.com/pkg/strconv/" target="_blank">http://docscn.studygolang.com/pkg/strconv/</a></p>
</li>
</ol>
<h2 id="sprintf-&#x65B9;&#x5F0F;&#x3002;"><a name="sprintf-&#x65B9;&#x5F0F;&#x3002;" class="anchor-navigation-ex-anchor" href="#sprintf-&#x65B9;&#x5F0F;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>1.1. Sprintf &#x65B9;&#x5F0F;&#x3002;</h2>
<p><strong>Sprintf &#x7684;&#x4F8B;&#x5B50;1&#xFF1A;int&#x8F6C;string&#x3002;</strong></p>
<pre class="language-"><code class="lang-go"><span class="token keyword">package</span> main

<span class="token keyword">import</span> <span class="token string">&quot;fmt&quot;</span>

<span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span>  <span class="token punctuation">{</span>
    <span class="token keyword">var</span> num1 <span class="token builtin">int</span> <span class="token operator">=</span> <span class="token number">99</span>
    str <span class="token operator">:=</span> fmt<span class="token punctuation">.</span><span class="token function">Sprintf</span><span class="token punctuation">(</span><span class="token string">&quot;%d&quot;</span><span class="token punctuation">,</span>num1<span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A; str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; 99</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %v&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p><strong>Sprintf &#x7684;&#x4F8B;&#x5B50;2&#xFF1A;float64 &#x3001;bool&#x3001;&#x5B57;&#x7B26;&#x8F6C;string&#x3002;</strong></p>
<pre class="language-"><code class="lang-go"><span class="token keyword">package</span> main

<span class="token keyword">import</span> <span class="token string">&quot;fmt&quot;</span>

<span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span>  <span class="token punctuation">{</span>
    <span class="token keyword">var</span> num2 <span class="token builtin">float64</span> <span class="token operator">=</span> <span class="token number">230000000.980</span>
    str <span class="token operator">:=</span> fmt<span class="token punctuation">.</span><span class="token function">Sprintf</span><span class="token punctuation">(</span><span class="token string">&quot;%f&quot;</span><span class="token punctuation">,</span>num2<span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; 23.98</span>
    <span class="token comment">//%v &#x5360;&#x4F4D;&#x7B26;&#x8868;&#x793A;&#x8868;&#x793A;&#x8F93;&#x51FA;&#x53D8;&#x91CF;&#x503C;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %v \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>

    <span class="token keyword">var</span> b <span class="token builtin">bool</span>  <span class="token operator">=</span> <span class="token boolean">true</span>
    str <span class="token operator">=</span> fmt<span class="token punctuation">.</span><span class="token function">Sprintf</span><span class="token punctuation">(</span><span class="token string">&quot;%t&quot;</span><span class="token punctuation">,</span>b<span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; &quot;true&quot;</span>
    <span class="token comment">//%q &#x5360;&#x4F4D;&#x7B26;&#x8868;&#x793A;&#x8F93;&#x51FA;&#x53D8;&#x91CF;&#x503C;&#xFF0C;&#x5E76;&#x4E14;&#x7528;&#x5F15;&#x53F7;&#x5305;&#x88F9;&#x3002;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %q \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>

    <span class="token keyword">var</span> myChar <span class="token builtin">int</span>  <span class="token operator">=</span> <span class="token string">&apos;a&apos;</span>
    <span class="token comment">//%c &#x5360;&#x4F4D;&#x7B26;&#x8868;&#x793A;&#x53D8;&#x91CF;&#x7684;&#x503C;&#x5BF9;&#x5E94;&#x7684;Unicode&#x5B57;&#x7B26;</span>
    str <span class="token operator">=</span> fmt<span class="token punctuation">.</span><span class="token function">Sprintf</span><span class="token punctuation">(</span><span class="token string">&quot;%c&quot;</span><span class="token punctuation">,</span>myChar<span class="token punctuation">)</span>
    <span class="token comment">//str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; &quot;a&quot;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %q \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<p><strong>&#x603B;&#x7ED3;&#xFF1A;&#x5B9E;&#x9645;&#x4E0A;&#x5C31;&#x662F;fmt&#x5305;&#x7684;&#x5404;&#x79CD;&#x5360;&#x4F4D;&#x7B26;&#x7684;&#x7528;&#x6CD5;&#x3002;&#x5177;&#x4F53;&#x53C2;&#x8003;&#x6587;&#x6863;&#x3002;</strong></p>
<h2 id="strconv&#x65B9;&#x5F0F;&#x3002;"><a name="strconv&#x65B9;&#x5F0F;&#x3002;" class="anchor-navigation-ex-anchor" href="#strconv&#x65B9;&#x5F0F;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>1.2. strconv&#x65B9;&#x5F0F;&#x3002;</h2>
<p>&#x8FD9;&#x79CD;&#x65B9;&#x5F0F;&#x662F;&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51E0;&#x4E2A;format&#x51FD;&#x6570;&#x3002;&#x5982;&#x4E0B;&#xFF1A;</p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#FormatBool" target="_blank">func FormatBool(b bool) string</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#FormatFloat" target="_blank">func FormatFloat(f float64, fmt byte, prec, bitSize int) string</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#FormatInt" target="_blank">func FormatInt(i int64, base int) string</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#FormatUint" target="_blank">func FormatUint(i uint64, base int) string</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#Itoa" target="_blank">func Itoa(i int) string</a></p>
<p><strong>&#x4F8B;&#x5B50;&#x5982;&#x4E0B;&#xFF1A;</strong></p>
<pre class="language-"><code class="lang-go"><span class="token keyword">package</span> main

<span class="token keyword">import</span> <span class="token punctuation">(</span>
    <span class="token string">&quot;fmt&quot;</span>
    <span class="token string">&quot;strconv&quot;</span>
<span class="token punctuation">)</span>

<span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span>  <span class="token punctuation">{</span>

    str <span class="token operator">:=</span> strconv<span class="token punctuation">.</span><span class="token function">FormatBool</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; &quot;true&quot;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %q \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>

    <span class="token comment">//&#x628A;100&#xFF0C;&#x4EE5;10&#x8FDB;&#x5236;&#x8F6C;&#x6362;&#x4E3A;&#x5B57;&#x7B26;&#x4E32;</span>
    str <span class="token operator">=</span> strconv<span class="token punctuation">.</span><span class="token function">FormatInt</span><span class="token punctuation">(</span><span class="token number">100</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; &quot;100&quot;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %q \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>

    <span class="token comment">//&#x628A;23.189 ,&#x4EE5;f&#x7684;&#x683C;&#x5F0F;&#x3002;&#x4FDD;&#x7559;5&#x4F4D;&#x5C0F;&#x6570;&#xFF0C;64&#x8868;&#x793A;&#x539F;&#x6765;&#x7684;&#x503C;23.189&#x662F;float64</span>
    str <span class="token operator">=</span> strconv<span class="token punctuation">.</span><span class="token function">FormatFloat</span><span class="token punctuation">(</span><span class="token number">23.189</span><span class="token punctuation">,</span><span class="token string">&apos;f&apos;</span><span class="token punctuation">,</span><span class="token number">5</span><span class="token punctuation">,</span><span class="token number">64</span><span class="token punctuation">)</span>
    <span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;str &#x7684;&#x7C7B;&#x578B;&#x662F; string ,str&#x7684;&#x503C;&#x662F; &quot;23.18900&quot;</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;str &#x7684;&#x7C7B;&#x578B;&#x662F; %T ,str&#x7684;&#x503C;&#x662F; %q \n&quot;</span><span class="token punctuation">,</span>str<span class="token punctuation">,</span>str<span class="token punctuation">)</span>
<span class="token punctuation">}</span>
</code></pre>
<h1 id="string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;"><a name="string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;" class="anchor-navigation-ex-anchor" href="#string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>2. string&#x7C7B;&#x578B;&#x8F6C;&#x57FA;&#x672C;&#x7C7B;&#x578B;&#x3002;</h1>
<h2 id="&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;"><a name="&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;" class="anchor-navigation-ex-anchor" href="#&#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>2.1. &#x4F7F;&#x7528;strconv&#x5305;&#x7684;&#x51FD;&#x6570;&#x3002;</h2>
<p>&#x4F7F;&#x7528;&#x7684;&#x51FD;&#x6570;&#x4E0B;&#x9762;4&#x4E2A;&#x51FD;&#x6570;&#xFF1A;</p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#ParseBool" target="_blank">func ParseBool(str string) (value bool, err error)</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#ParseFloat" target="_blank">func ParseFloat(s string, bitSize int) (f float64, err error)</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#ParseInt" target="_blank">func ParseInt(s string, base int, bitSize int) (i int64, err error)</a></p>
<p><a href="http://docscn.studygolang.com/pkg/strconv/#ParseUint" target="_blank">func ParseUint(s string, base int, bitSize int) (n uint64, err error)</a></p>
<p><strong>&#x4F8B;&#x5B50;&#x5982;&#x4E0B;&#xFF1A;</strong>&#x6CE8;&#x610F;bitSize&#x53C2;&#x6570;&#xFF0C;&#x8868;&#x793A;&#x628A;&#x5B57;&#x7B26;&#x4E32;&#x8F6C;&#x79FB;&#x5230;&#x6570;&#x5B57;&#x7684;&#x65F6;&#x5019;&#x3002;&#x6570;&#x636E;&#x7684;&#x7CBE;&#x5EA6;</p>
<pre class="language-"><code class="lang-go"><span class="token keyword">package</span> main

<span class="token keyword">import</span> <span class="token punctuation">(</span>
    <span class="token string">&quot;fmt&quot;</span>
    <span class="token string">&quot;strconv&quot;</span>
<span class="token punctuation">)</span>
<span class="token comment">//strconv.Parsexxx &#x8FD4;&#x56DE;2&#x4E2A;&#x503C;&#x3002;&#x7528;&#x4E0B;&#x5212;&#x7EBF;&#x5FFD;&#x7565;&#x8FD4;&#x56DE;&#x7684;&#x7B2C;&#x4E8C;&#x4E2A;&#x503C;error</span>
<span class="token keyword">func</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token punctuation">)</span>  <span class="token punctuation">{</span>
    b<span class="token punctuation">,</span> <span class="token boolean">_</span> <span class="token operator">:=</span> strconv<span class="token punctuation">.</span><span class="token function">ParseBool</span><span class="token punctuation">(</span><span class="token string">&quot;true&quot;</span><span class="token punctuation">)</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;b&#x503C;&#x662F;%v \n&quot;</span><span class="token punctuation">,</span>b<span class="token punctuation">)</span><span class="token comment">//&#x8F93;&#x51FA;&#xFF1A;b&#x503C;&#x662F;true</span>

    <span class="token comment">//&#x628A;10&#x8FDB;&#x5236;&#x7684;&#x201C;123&#x201D;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x8F6C;&#x6362;&#x4E3A;int64&#x7C7B;&#x578B;</span>
    <span class="token comment">//base&#x53C2;&#x6570;&#x8868;&#x793A;&#x4EE5;&#x4EC0;&#x4E48;&#x8FDB;&#x5236;&#x7684;&#x65B9;&#x5F0F;&#x53BB;&#x89E3;&#x6790;&#x7ED9;&#x5B9A;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x5219;&#x5B57;&#x7B26;&#x4E32;&#x7684;&#x524D;&#x7F00;&#x6697;&#x793A;&#x57FA;&#x6570;&#xFF1A;base 16&#x8868;&#x793A;&#x201C;0x&#x201D;&#xFF0C;base 8&#x8868;&#x793A;&#x201C;0&#x201D;&#xFF0C;&#x5426;&#x5219;&#x8868;&#x793A;10</span>
    <span class="token comment">//bitSize&#x8868;&#x793A;&#x8F6C;&#x6362;&#x4E3A;&#x591A;&#x5C11;&#x4F4D;&#x7684;int&#xFF1A;0,8,16,32&#x548C;64&#x5BF9;&#x5E94;&#x4E8E;int&#xFF0C;int8&#xFF0C;int16&#xFF0C;int32&#x548C;int64&#x3002;</span>
    num<span class="token punctuation">,</span> <span class="token boolean">_</span> <span class="token operator">:=</span> strconv<span class="token punctuation">.</span><span class="token function">ParseInt</span><span class="token punctuation">(</span><span class="token string">&quot;123&quot;</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">,</span><span class="token number">64</span><span class="token punctuation">)</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;num&#x503C;&#x662F;%v \n&quot;</span><span class="token punctuation">,</span>num<span class="token punctuation">)</span><span class="token comment">//num&#x503C;&#x662F;123</span>


    <span class="token comment">//&#x628A;&#x5B57;&#x7B26;&#x4E32;&#x8F6C;&#x6362;&#x4E3A;&#x6D6E;&#x70B9;&#x6570;&#xFF0C;&#x5176;&#x7CBE;&#x5EA6;&#x7531;bitSize&#x6307;&#x5B9A;&#xFF1A;64&#x4E3A;float64</span>
    f<span class="token punctuation">,</span> <span class="token boolean">_</span> <span class="token operator">:=</span> strconv<span class="token punctuation">.</span><span class="token function">ParseFloat</span><span class="token punctuation">(</span><span class="token string">&quot;123.897&quot;</span><span class="token punctuation">,</span><span class="token number">64</span><span class="token punctuation">)</span>
    fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;f&#x503C;&#x662F;%v \n&quot;</span><span class="token punctuation">,</span>f<span class="token punctuation">)</span><span class="token comment">//f&#x503C;&#x662F;123.897</span>
<span class="token punctuation">}</span>
</code></pre>
<h2 id="string-&#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;"><a name="string-&#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;" class="anchor-navigation-ex-anchor" href="#string-&#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;"><i class="fa fa-link" aria-hidden="true"></i></a>2.2. string &#x8F6C;&#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x6CE8;&#x610F;&#x4E8B;&#x9879;</h2>
<p>&#x5728;&#x5C06; String &#x7C7B;&#x578B;&#x8F6C;&#x6210; &#x57FA;&#x672C;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x65F6;&#xFF0C;&#x8981;&#x786E;&#x4FDD; String &#x7C7B;&#x578B;&#x80FD;&#x591F;&#x8F6C;&#x6210;&#x6709;&#x6548;&#x7684;&#x6570;&#x636E;&#xFF0C;&#x6BD4;&#x5982;&#xFF1A; &#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x628A; &quot;123&quot; , &#x8F6C;&#x6210;&#x4E00;&#x4E2A;&#x6574;&#x6570;&#xFF0C;&#x4F46;&#x662F;<strong>&#x4E0D;&#x80FD;&#x628A; &quot;hello&quot; &#x8F6C;&#x6210;&#x4E00;&#x4E2A;&#x6574;&#x6570;&#xFF0C;&#x5982;&#x679C;&#x8FD9;&#x6837;&#x505A;&#xFF0C;Golang &#x76F4;&#x63A5;&#x5C06;&#x5176;&#x8F6C;&#x6210; 0</strong> &#xFF0C;<strong>&#x5C31;&#x662F;&#x6CA1;&#x8F6C;&#x6210;&#x529F;&#x5C31;&#x8BBE;&#x7F6E;&#x4E3A;&#x8FD4;&#x56DE;&#x7684;&#x6570;&#x636E;&#x7C7B;&#x578B;&#x7684;&#x9ED8;&#x8BA4;&#x503C;&#x3002;float =&gt; 0 bool =&gt; false</strong></p>
<p><strong>&#x4F8B;&#x5B50;&#x5982;&#x4E0B;&#xFF1A;</strong></p>
<pre class="language-"><code class="lang-go">num<span class="token punctuation">,</span> <span class="token boolean">_</span> <span class="token operator">:=</span> strconv<span class="token punctuation">.</span><span class="token function">ParseInt</span><span class="token punctuation">(</span><span class="token string">&quot;hello&quot;</span><span class="token punctuation">,</span><span class="token number">10</span><span class="token punctuation">,</span><span class="token number">64</span><span class="token punctuation">)</span>
fmt<span class="token punctuation">.</span><span class="token function">Printf</span><span class="token punctuation">(</span><span class="token string">&quot;num&#x503C;&#x662F;%v &quot;</span><span class="token punctuation">,</span>num<span class="token punctuation">)</span><span class="token comment">//num&#x503C;&#x662F;0</span>
</code></pre>

                                
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